• Diverging Lens

    Updated: 2011-07-31 20:30:24
    A lens forms an image of an object. The object is 16 cm from the lens. The image is 12 cm from the lens on the same side as the object. (a) What is the focal length of the lens? Is the lens...

  • What should I major/minor in has an undergrad wanting to work in theoretical physics?

    Updated: 2011-07-31 20:08:49
    My ultimate goal is to become a theoretical physicist (after I have received my PhD)researching at a university. I am currently looking at majors and minors available for me as an undergrad. I was...

  • why do we get electric shock

    Updated: 2011-07-31 20:05:53
    so i have learned that potential difference always occurs between points which have some common node that is if you have two circuits which donot have anything in common there will not exist any...

  • Gravitational Wave Physics and Astronomy Workshop (GWPAW)

    Updated: 2011-07-29 21:29:36
    GWPAW is the meeting formerly called GWDAW. It is a general meeting on the physics and astronomy of gravitational waves, techniques for their detection, and interpretation of data and results. The meeting will be hosted by AEI Hannover, but held at the Novotel here: http://www.novotel.com/gb/hotel-5390-novotel-hannover/index.shtml. AEI has signed a contract for the meeting rooms and [...]

  • OG51 Theory Postdoc fellowship for non-Italians

    Updated: 2011-07-29 17:05:52
    The theory group OG51 announces one postdoctoral position for non-Italian citizens. The research program regards the modeling of gravitational wave sources, with particular reference to gravitational wave emission during the early stages of neutron stars life, and to the associated neutrino processes. Research will be carried on at one of the following Institutes: – Department of Physics, [...]

  • International Relativistic Astrophysics PhD: 2nd call for 2011-2012

    Updated: 2011-07-27 17:46:46
    9 Erasmus Mundus funded positions available (3 for European students, 5 for non-European students, 1 for “Western Balkans and Turkey Window” candidates) Deadlines: 30 September 2011 Additional Information: http://www.irap-phd.org – http://www.icranet.org – http://www.icra.it Following the successful scientific space missions by the European Space Agency (ESA) and the European Southern Observatory (ESO) in Chile, as well as the high [...]

  • Tevatron experiments close in on Higgs particle

    Updated: 2011-07-27 16:10:02
    Scientists of the CDF and DZero collaborations at Fermilab continue to increase the sensitivity of their Tevatron experiments to the Higgs particle and narrow the range in which the particle seems to be hiding. At the European Physical Society conference in Grenoble, Fermilab physicist Eric James reported today that together the CDF and DZero experiments [...]

  • Presentations of the 15th Paris Cosmology Colloquium 2011

    Updated: 2011-07-26 23:15:27
    Ecole Internationale d’Astrophysique Daniel Chalonge The 15th Paris Cosmology Colloquium 2011`From Cold Dark Matter to Warm Dark Matter in the Standard Model of the Universe: Theory and Observations’. 20 Years of Activity. 20, 21 and 22 JULY 2011 Paris Observatory (HQ), historic Perrault building, Paris, France We are pleased to inform you that the presentations by [...]

  • More than one way to search for SUSY

    Updated: 2011-07-26 17:44:27
    Experiments at the Large Hadron Collider have yet to find signs of supersymmetric particles, scientists announced at the European Physical Society conference this week in Grenoble. But physicists will significantly improve their knowledge of SUSY in the coming year through indirect methods, which could include the discovery of the Higgs boson. “For supersymmetry, this is [...]

  • New Particle Discovered at Fermilab

    Updated: 2011-07-26 00:11:02
    Fermilab continues to produce results with some interesting physics results, and they've just uncovered a new type of particle called the Xi-sub-b (Ξb). This isn't an unexpected result, because this particle had been predicted by theory for years, but hadn't ever been observed in any sort of experiment....Read Full Post

  • DZero announces top quark asymmetry result, questions theory

    Updated: 2011-07-25 17:49:28
    This story first appeared on July 25 in Fermilab Today. A new result from Fermilab’s DZero experiment was announced Saturday at the European Physical Society conference in Grenoble, France, studying the production of the top quark and its antimatter counterpart, the antitop quark, in proton-antiproton collisions. This result, called top quark forward and backward asymmetry, [...]

  • How to find the Higgs particle; first Higgs search results from LHC and Tevatron

    Updated: 2011-07-22 06:01:06
    Editor’s note: story updated at noon CDT on July 22: The LHC experiments reported at the EPS meeting a tantalizing excess of Higgs-like events, short of claiming a discovery, but very intriguing nevertheless. See the Higgs search at the LHC section further below for more information on these results. Experiments at Fermi National Accelerator Laboratory [...]

  • Wealth of particle physics data yields numerous results for EPS conference

    Updated: 2011-07-21 18:11:16
    Fermilab’s Tevatron particle collider is nearing the end of its lifetime, but results from its two collider experiments are nowhere close to dwindling. Members of the CDF and DZero collaborations at Fermilab will present a record number of results at this month’s European Physical Society conference on High-Energy Physics, which begins on July 21 in [...]

  • Harry Potter Science

    Updated: 2011-07-21 00:33:31
    With all the hubbub around the new Harry Potter film, it should have occurred to me earlier that this had some relevance to this physics blog. But the excitement has overwhelmed me, I suppose. I've seen the film and loved it, because I'm a huge fan of the books and the films. (Really, I love Harry Potter, as I've blogged about elsewhere.)...<a href="http://clk.about.com/?zi=1/1hc&zu=http://physics.about.com/b/2011/07/20/harry-potter-science.htm"Read Full Post

  • The 21st workshop on General Relativity and Gravitation in Japan (JGRG21)

    Updated: 2011-07-13 12:32:45
    Sakura Hall, Katahira Campus, Tohoku University 26-29 September 2011 There has been an impressive progress in astrophysical/cosmological observations in recent years. Cosmology has entered an era of precision science. Astrophysical black holes have been observed in many frequency bands with better resolutions and sensitivities. Observations of gamma-ray bursts have added a new mystery to relativistic astrophysics. And, [...]

  • South African Gravity Society Meeting 2011

    Updated: 2011-07-11 21:53:31
    The 2011 meeting of the South African Gravity Society will take place at Rhodes University, in Grahamstown, from the 11th to the 13th of September 2011. Registration and abstract submission will be open from the 1st of June 2011 to the 15th of August 2011. The following registration fees apply: * Early registration (before 1st of [...]

  • Neutrinos and antineutrinos might "disappear" differently, going against the standard model

    Updated: 2011-07-11 21:50:00
    : , skip to main skip to sidebar Monday , July 11, 2011 Neutrinos and antineutrinos might disappear differently , going against the standard model Scientists working on the MINOS experiment at Fermilab say they may have detected for the first time a difference in the way muon neutrinos and antineutrinos disappear . If they're right , it could change particle physics as we know . it The MINOS experiment Far Detector , located in northern Minnesota . Photo credit : Jon ShakataGaNai' Davis . A fundamental of the standard model of particle physics called CPT symmetry requires that the way a particle and its antiparticle disappears be the same . The MINOS experiment has shown that this may not be the . case When a neutrino or antineutrino disappears , it doesn't actually go away . Instead , it

  • Living Reviews in Relativity: “Gravitational Wave Detection by Interferometry” (major update)

    Updated: 2011-07-11 15:40:50
    Today, Living Reviews in Relativity has published a major update of the review “Gravitational Wave Detection by Interferometry (Ground and Space)” by Matthew Pitkin, Stuart Reid, Sheila Rowan, and Jim Hough. Please find the abstract and further details below. —————— PUB.NO. lrr-2011-5 Pitkin, Matthew, Reid, Stuart, Rowan, Sheila and Hough, James “Gravitational Wave Detection by Interferometry (Ground and Space)” ACCEPTED: 2011-06-17 PUBLISHED: [...]

  • Relativity and Gravitation – 100 Years after Einstein in Prague

    Updated: 2011-07-07 19:55:46
    At the beginning of April 1911 Albert Einstein arrived in Prague to become full professor of theoretical physics at the German part of Charles University. It was there, for the first time, that he concentrated primarily on the problem of gravitation. Before he left Prague in July 1912 he had submitted the paper “Relativität [...]

  • To Be or Not to Be ... a Hologram?

    Updated: 2011-07-06 02:06:20
    One of the most amazing concepts in all of science got even more amazing a couple of years ago, when a physicist suggested that we were actually holograms. New research, however, suggests that we probably aren't holograms, but the principle at the heart of the matter may still be salvaged, allowing there to be holograms of us somewhere out there....Read Full Post

  • Quantum Gravity: the first 25 years. Read the focus section published in Classical and Quantum Gravity.

    Updated: 2011-07-05 18:12:05
    We invite you to read-for-free the CQG focus section reviewing 25 years of quantum gravity research. http://iopscience.iop.org/0264-9381/28/15 This issue features 2 invited review articles from physicists who have been associated with String Theory and Loop Quantum Gravity from their inception. They were invited to write a retrospective review: What were the initial hopes? To what extent have [...]

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